A publisher reports that 78 % of their readers own a laptop. A marketing executive wants to test the claim that the percentage is actually different from the reported percentage. A random sample of 120 found that 71 % of the readers owned a laptop. Find the value of the test statistic. Round your answer to two decimal places.

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Q: Nationally, 80 percent of adults own an thermometer. You are interested in whether the same…

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Q: Give the value of the test statistic. (Enter your answer rounded to two decim

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Q: A publisher reports that 65% of their readers own a laptop. A marketing executive wants to test the…

A: Here the given information is A publisher reports that 65% of their readers own a laptop. A…

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A: Given,population mean(μ)=25

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Q: 3. As part of the National Heath and Nutrition Examination Survey, the Department of Heath and Human…

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Q: A consumer group surveyed 146 airplane travelers after a flight and found that 132 of them would fly…

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Q: quality conscious disc manufacturer wishes to know the fraction of disks his company makes which are…

A: Given Sample size =865 X=112

Q: A Pew Internet poll asked 4272 U.S. adults about their use of smart watches and fitness trackers. A…

A: Given that  Total Number of adults about their use of smart watches and fitness trackers n = 4272…

Q: Compute the test statistic. Round to two decimal places.

A: Sample size, n=2027 No. of adults who drank diet soda, x=485

Q: Akiko surveyed several friends, asking them how many siblings they had. Use this data to find the…

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Q: A publisher reports that 22% of their readers own a laptop. A marketing executive wants to test the…

A: Denote p as the true proportion of readers, who own a laptop. It is reported that 22% of their…

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A: Solution:Point estimate: The population parameter which is estimated by using sample statistic is…

Q: Steven ran the 100 meter dash in 13 seconds.  What is his T-score if the class mean was 14 seconds…

A: t statistic

Q: In a recent study, 46% of people enjoy country music.  If 200 people are surveyed about their…

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A: From the provided information,

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Q: A company gives the percentage of defective products as 6% or less. Use the sample below to…

A: Given: p0=0.06n=50x=5 The significance level is taken as 0.05.

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Q: According to a Mobile Marketing Company's survey of 2000 people, 60% said that they use their mobile…

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A: Given that  Mean = 30 Median = 26.2

Q: A hospital director is told that 55% of the emergency room visitors are insured. The director wants…

A: Given: n= 320 ,x= 160 p= 0.55 ,significance level(∝)= 0.01 p̂= 160 / 320 =0.5

Q: n a survey done in 2010, students in a statistics class were asked, "How do you prefer to use your…

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Q: In the past, 70% of the tourists who visited Dubai went to see Burj Khalifa. The management of Burj…

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Q: There were 34 females that weighed over 250 pounds. What percent of females aged 20 to 29 weighed…

A: Given data,  N~(161.61,48.95)  i.e., μ=161.61σ=48.95   If n=34 P(X>250)=?

Q: se answer the question in the photo. TY!

A: GIven:

Q: The number of hours per week that the television is turned on is determined for each family in a…

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Q: In a study, the data you collect is Number of traffic tickets. What is the level of measurement?.

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Q: 6. A poll reports that 34% of Canadians download movies on their computers. The poll has a margin of…

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Q: The Bangor Humane Society tracks cat adoptions closely. They sample 54 people who looked at cats…

A: Sample proportion = x/n Here x = 36 and n = 54

Q: The test for a certain disease is 86% accurate.  A hospital tests a sample of 5000 patients for this…

A: Given: Accuracy of the test is 86% Inaccuracy of the test = 100-86% = 14% N = Total number of…

Q: elow are the summary statistics calculated from the heights of students on a university campus. 25%…

A: It is given that the first quartile is 58.

Q: a researcher wants to find the proportion.  what size sample should be obtained in order to be 90%…

A: We have given that,  Confidence interval = 90% and Margin of error (E) = 3% = 0.03 Then,  We will…